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11 June 2007 Imaging spatio-temporal fluctuations and local susceptibility in disordered polymers
N. E. Israeloff, P. S. Crider, M. E. Majewski
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Proceedings Volume 6600, Noise and Fluctuations in Circuits, Devices, and Materials; 66001A (2007) https://doi.org/10.1117/12.726961
Event: SPIE Fourth International Symposium on Fluctuations and Noise, 2007, Florence, Italy
Abstract
Spatial and temporal fluctuations of the electric polarization were imaged in polymer thin films near the glass transition using electric force microscopy. Below the glass transition the fluctuations are quasi-static and spatial fluctuations were found to quantitatively agree with predictions for thermal fluctuations. Temporal fluctuations appear near the glass transition. Images of the space-time nanoscale dynamics near the glass transition are produced and analyzed. Local, complex dielectric susceptibility was also studied, and shows that dynamics on the free-surface are faster relative to the bulk.
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N. E. Israeloff, P. S. Crider, and M. E. Majewski "Imaging spatio-temporal fluctuations and local susceptibility in disordered polymers", Proc. SPIE 6600, Noise and Fluctuations in Circuits, Devices, and Materials, 66001A (11 June 2007); https://doi.org/10.1117/12.726961
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KEYWORDS
Glasses
Correlation function
Dielectrics
Dielectric polarization
Capacitance
Polymers
Scanning probe microscopy
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